Principal Data Scientist jobs in Wales

Performance Data Scientist Department - Sport System Institute Services Salary - £41,574.01 (pro rata - £25,281.49) Working Hours - 3 days per week (22.5 hours) 12 months fixed term contract Location - Sport Wales National Centre, Cardiff Closing Date - 6th February 2026 9am Provisional Interview Date - 19th February 2026 Please go to our website to view the full advert and job...

Data Scientist - £70k | Remote / Hybrid | FinTech / Payments We’re working with an established FinTech / Payments business that has been helping customers manage and move money globally for many years. The company builds technology-led products that support low-cost, multi-currency payments and money management, operating across several regulated markets. They’re now investing further in their...

You will work on modernizing authentication and login experiences across multiple consumer applications, helping drive growth through high-quality user experience, experimentation, and data-driven decision making. This is a collaborative role, working closely with engineers, product managers, and cross-functional partners in a fast-paced environment.

You will work across a variety of complex analytical problems, owning experimentation end-to-end—even when ideal conditions such as user randomisation or high statistical power are not present.

You will work on real production problems rather than research-only work, owning models from first iteration through to live deployment.

You will collaborate closely with other data scientists, data engineers, and DevOps, with the freedom to shape how GenAI and ML are used across the platform.

You will design and build the systems that identify the signals that matter most for visibility, the retrieval and embedding architecture that feeds the models, the ranking and scoring framework that prioritises actions and the evaluation layer that measures how different LLMs behave across queries, surfaces and contexts.

Job...

You will define technical strategy, design scalable data systems, mentor senior engineers, and partner closely with product, engineering, analytics, and business leaders to transform strategic goals into robust, data-driven solutions.

Spherical Search has recently partnered with a well-established Analytical Testing and CRO services organisation specialising in inhalation and nasal drug delivery . The company works with a broad range of pharmaceutical, biologics, and device organisations on a global scale. We are currently seeking a Senior Scientist to join the team in an on-site role, based within a commutable distance...

Spherical Search has recently partnered with a well-established Analytical Testing and CRO services organisation specialising in inhalation and nasal drug delivery. The company works with a broad range of pharmaceutical, biologics, and device organisations on a global scale.We are currently seeking a Senior Scientist to join the team in an on-site role, based within a commutable distance of...

You will complete medium-complexity and normal-risk fire risk assessments (FRAs) and provide clear, specialist advice and technical support to clients.

You will assist with mentoring Graduate Consultants and contribute to the development and growth of the team.

You will support and mentor graduate consultants and develop skills across a range of specialist areas.

The company works with a broad range of pharmaceutical, biologics, and device organisations on a global scale. We are currently seeking a Senior Scientist to join the team in an on-site role, based within a commutable distance of Cwmbran, Wales. Support the Associate Manager, Pharmaceutical Development with the organising and planning of project activities with your group utilising the most...

You will work on real production problems rather than research-only work, owning models from first iteration through to live deployment.

You will collaborate closely with other data scientists, data engineers, and DevOps, with the freedom to shape how GenAI and ML are used across the platform.

Data Scientist - £70k | Remote / Hybrid | FinTech / Payments We’re working with an established FinTech / Payments business that has been helping customers manage and move money globally for many years. The company builds technology-led products that support low-cost, multi-currency payments and money management, operating across several regulated markets. They’re now investing further in their...

You will design and build the systems that identify the signals that matter most for visibility, the retrieval and embedding architecture that feeds the models, the ranking and scoring framework that prioritises actions and the evaluation layer that measures how different LLMs behave across queries, surfaces and contexts.

You will work across a variety of complex analytical problems, owning experimentation end-to-end—even when ideal conditions such as user randomisation or high statistical power are not present.

You will work on modernizing authentication and login experiences across multiple consumer applications, helping drive growth through high-quality user experience, experimentation, and data-driven decision making. This is a collaborative role, working closely with engineers, product managers, and cross-functional partners in a fast-paced environment.

You will define technical strategy, design scalable data systems, mentor senior engineers, and partner closely with product, engineering, analytics, and business leaders to transform strategic goals into robust, data-driven solutions.

Spherical Search has recently partnered with a well-established Analytical Testing and CRO services organisation specialising in inhalation and nasal drug delivery. The company works with a broad range of pharmaceutical, biologics, and device organisations on a global scale.We are currently seeking a Senior Scientist to join the team in an on-site role, based within a commutable distance of...

Spherical Search has recently partnered with a well-established Analytical Testing and CRO services organisation specialising in inhalation and nasal drug delivery. The company works with a broad range of pharmaceutical, biologics, and device organisations on a global scale.We are currently seeking a Senior Scientist to join the team in an on-site role, based within a commutable distance of...